freezing days in sap.me.calendar

i want to freeze 50 days in a year of a calender.how to do it.i tried some code,but it is not working.

function(oEvent){

        var oCal = new sap.ui.getCore().byId("Calendar1");

        var oT1 = new sap.ui.getCore().byId("Calendar1").getSelectedDates();

        var oT2 = new sap.ui.getCpore().byId("Calendar1").setDaywidth('50');

        var oT3 = new sap.ui.getCore().byId("Calendar1").setDisabledDates(oT2);

        alert(oT1);

        alert(oT3);

}